It's all going on right now! Whilst Cher's Twitter account very-recently unveiled the cover art of her new single 'Woman's World' and revealed an 18 June performance of the song on 'The Voice' series finale, there was a NBC press release about the upcoming TV appearance - containing release dates of the single and her album!
As well as discussing Cher's 18 June performance on 'The Voice', the NBC press release goes on to say that the single will be digitally released on that date too, to coincide with the performance. It isn't yet known if physical copies of the single will be available.
Moreover, the press release about her upcoming 'The Voice' performance reveals that fans will be able to pre-order her new album on 18 June, and that it will be released on 24 September.